Assignment - 1 Chap. 1 Wired LAN s

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1 Assignment - 1 Chap. 1 Wired LAN s 1. (1 Mark) 1. Draw the frame format of Ethernet. 2. What is unicast, multicast and broadcast address? 3. State the purpose of CRC field. 2. (5 Marks) 1. Explain how the IEEE has divided the data link layer. Explain standard Ethernet. 2. Write a note on Fast Ethernet. 3. Write a note on Gigabit Ethernet. 4. Explain bridged and switched Ethernet. 5. What are backbone networks? Explain any two backbone networks. 6. Explain advantages of VLAN.

2 Assignment - 2 Chap. 2Wireless LAN (5 Marks) 1. Define the Following a. BSS b. ESS 2. What is Bluetooth? Explain its architecture. 3. Compare Wireless LAN and Bluetooth. 4. State the Applications of wireless LAN.

3 Assignment - 3 Chap. 3 Network Layer 1. Draw the frame format of IP datagram and explain its different parts. 2. What is congestion? Discuss data link layer, network layer& transport layer policies to avoid congestion. 3. What are the different tasks performed by the network layer? 4. Explain open loop & close loop solution to avoid congestion. 5. Discuss different properties of routing algorithm. 6. Explain the properties of routing algorithm. 7. What is the need of network address translation? How NAT router maintains translation table? 8. Explain IPv4 fragmentation process in detail. 9. Discuss classful addressing in detail. 10. What is router? Explain components of routers. 11. Explain Working of routers. 12. A company is granted the block which contains 64 addresses. The company wants to divide these addresses into three groups, containing 32, 16 and16 addresses respectively. Design the subnets.

4 Assignment - 4 Chap. 4 Address Mapping (5 Marks) 1. What is ARP? Explain need and working of ARP. 2. Explain in brief ARP with its frame format. 3. What is address resolution? Explain all steps required for a host or router needs to Use ARP. 4. Discuss four different cases required for the services of ARP. 5. Why ARP request is unicast and reply is broadcast? Explain.

5 Assignment - 5 Chap 5. Transport Layer 1. Explain TCP protocol with its stream delivery,bytes,segment service. 2. Explain stream delivery service and sending and receiving buffer service of TCP. 3. Write a short note on UDP. 4. Draw & Explain segment format of TCP. 5. Explain three sections used in UDP checksum. Which common concepts are used in UDP operation? 6. Explain how network layer implement connection oriented service. 7. Explain the different features supported by TCP.

6 Assignment - 6 Chap 6. Application Layer 1. Write a detail working of SMTP. 2. Write a short note on DNS. 3. SMTP, FTP, HTTP are the protocols to transfer messages from one point to another. 4. Comment on this. 5. Compare and contrast FTP and HTTP. 6. Discuss POP3 and IMAP4 message access protocols. 7. Explain any two scenarios of architecture. 8. Explain recursive, iterative resolution and caching used in DNS. 9. Explain HTTP request and response messages.

7 Assignment - 7 Chap. 7 Network Security 1. Define symmetric key cryptography. 2. Describe different encryption techniques. 3. Write a short note on Encryption. 4. Write a short note on firewalls. 5. Explain how encryption technique and virus shields are used for network protection? 6. Explain the concept of DNS spoofing. Discuss the strategies used to prevent DNS spoofing. 7. What is cryptography? Explain two fundamental cryptographic principles.

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